温度,介质浓度对化学腐蚀有显着影响。

“庄稼一枝花，全靠肥当家”。 KNO₃应属于

A．氮肥

B．磷肥

C．钾肥

D．复合肥

用括号里的词的适当形式填空。

1. We'll have fun __________( learn ) English this term.

2. My mother __________(wash) clothes when I got home from school.

3. -What were you doing at 7:00 yesterday evening?

    -I __________ (study) for a test.

4. -I wonder how to use the washing machine.

    -That's easy,I __________(show) you later .

5. __________ the dog __________(lie) under the tree when you passed?

如图18-5-24所示水坝水底线水平，已知水坝单宽流量为10m²/s，上游水深h₁= 5m，下游水深h₂=1.2m，假设不考虑水底摩擦力。则水头损失和单宽水流冲力为（）。

A．0.46m，117.6kN/m

B．0.46m，54.3kN/m

C．0.26m，117.6kN/m

D．0.26m，54.3kN/m

患者，女，46岁。2周来自觉心慌，时作时止，兼头晕，舌淡红，脉细弱。治疗应选取何经穴为主

A．手太阴、足少阴经
B．足少阴、手少阴经
C．手厥阴、足厥阴经
D．手少阴、手厥阴经
E．足少阴、手厥阴经

千岛湖为钱塘江支流______江建立水库后形成的湖泊风景区。